I've always liked the conservation of momentum in inelastic collisions experiment where two steel ball bearings collide with each other and depart at different angles. This experiment is about measuring mass, potential energy, kinetic energy, velocity, and trajectories.

If we could fabricate things through the internet we'd be all set. Unfortuneately we don't know what class 12 means so we know nothing about the state of your knowledge. We also know nothing about your access to materials, or tools, or your facility for fabricating things.

You might get more meaningful help if you tell us what your ideas are. Then we can help you. If you continue in the present vein, then people may conclude that you are displaying the traits of a lazy sponge and start to ignore you. Mind you I'm not saying that you are one, only that it is starting to look that way.

i too agree with mr. dave . . . unless we have any inputs from you we won't be in a position to provide you with efficient help . . . there are a dozen DO IT YOURSLEF projects easy and simple but as said untill we know your interests how can we be of any assistance mr. genius . .

i too agree with mr. dave . . . unless we have any inputs from you we won't be in a position to provide you with efficient help . . . there are a dozen DO IT YOURSLEF projects easy and simple but as said untill we know your interests how can we be of any assistance mr. genius . .

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10 months has passed since this one, so the OP either came up with something on their own or they failed. I think I'll lock this one now.